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flowchart TB
A[Realms in South Africa] --> B1(Terrestrial)
A --> B2(River)
A --> B3(Wetlands)
A --> B4(Estuarine)
A --> B5(Marine)
B1 --> C1[MT2]
B1 --> C2[T1]
B1 --> C3[T2]
B1 --> C4[Functional biomes]
B1 --> C4[T3]
B1 --> C5[T4]
B1 --> C6[T5]
B2 --> D1[F1]
B3 --> E1[F2]
B3 --> E2[TF1]
B4 --> F1[FM1]
B5 --> H1[M1]
B5 --> H2[M2]
B5 --> H3[TM1]
C1 & C2 & C3 & C4 & C5 & C6 --> GROUP["⎱ All Terrestrial ⎰"]
GROUP --> I1[MT2.1]
GROUP --> I2[T1.2]
GROUP --> I3[T2.4]
GROUP --> I4[T3.1]
GROUP --> I5[T3.2]
GROUP --> I6[T4.1]
GROUP --> I7[T4.2]